While the sauce simmers, put the zucchini slices in a bowl with the 1 tbsp. olive oil and set aside. In a frying pan, brown the italian sausage and set aside.
Once the sauce is done simmering, its time to assemble the lasagna. Grease a 12 by 9 baking dish and put one layer of zucchini down, followed by 3/4 cup cottage cheese, 1/2 of the cooked meat, and 1/2 of the sauce. Repeat this once more and top with a final layer of zucchini and parmesan cheese.
Bake for 45 minutes and enjoy!!
Note that there will be a lot of liquid in the pan after cooking, you can scoop this out if you would like. I made this to divvy out into individual containers for lunch this week, and as I portioned it out I drained some of the liquid.